ADU & Home Additions in Los Gatos
Add living space, rental income, or a private guest suite to your Los Gatos property with a custom-designed ADU or home addition.
How Much Does ADU & Home Additions Cost in Los Gatos?
Based on ADU and addition projects across Silicon Valley. Garage conversions start lower.
Every project is unique. We provide a fixed-price contract after your free consultation — no hidden fees, no cost-plus surprises. The price you agree to is the price you pay.
What to Know About ADU & Home Additions in Los Gatos
Local building codes, neighborhood character, and permit requirements vary by city. Here's what Los Gatos homeowners should know before starting a project.
- 01Los Gatos allows ADUs up to 1,200 sq ft on most residential lots, with reduced setback requirements per state law — but hillside overlay zones have additional restrictions
- 02Detached ADUs in Los Gatos typically require 4-6 months for permitting and 5-8 months for construction, depending on complexity
- 03Garage conversions are the most cost-effective ADU option in Los Gatos, starting around $150,000-$200,000 including full kitchen and bathroom
- 04Los Gatos charges development impact fees for new ADUs — currently around $10,000-$15,000 depending on square footage
- 05Hillside properties in Los Gatos may require soils reports, grading plans, and tree protection plans before ADU permits are issued
- 06Rental income from a Los Gatos ADU typically ranges from $2,500-$4,500/month depending on size and finishes
Our ADU & Home Additions Process
A clear, structured approach from your first call to final reveal.
Feasibility Assessment
We evaluate your property, zoning, and lot coverage to determine what's possible and what will deliver the best ROI.
Design & Engineering
Our architects create plans that maximize space, light, and livability while meeting all local building codes.
Permits & Approvals
We navigate the full permitting process — city planning, building department, and utility coordination.
Construction
Our experienced crew builds your ADU with the same quality standards as our luxury home remodels.
Inspection & Handover
We manage all inspections, obtain the certificate of occupancy, and walk you through your completed ADU.
ADU & Home Additions in Los Gatos: FAQ
Answers to common questions from Los Gatos homeowners.
Most likely yes. California state law (AB 2221) requires cities to allow at least one ADU on any residential lot. Los Gatos permits ADUs up to 1,200 sq ft on most lots. We start every project with a free feasibility assessment where we review your lot, zoning, setbacks, and utility connections.
Plan for 10-14 months total: 3-5 months for design, engineering, and permitting, followed by 5-8 months of construction. Garage conversions can be faster (7-10 months total) since they use existing structures.
As of California's current ADU laws, owner-occupancy requirements have been suspended for most ADUs through 2030. You can rent out your ADU without living on the property. Check with us for the latest on Los Gatos-specific regulations.
A well-finished 600-800 sq ft ADU in Los Gatos typically rents for $2,800-$4,000/month. A larger 1,000-1,200 sq ft unit with high-end finishes can command $3,500-$4,500/month. This represents a strong return on your investment.
A JADU (Junior ADU) is up to 500 sq ft and must be created within the existing footprint of your home. It requires an efficiency kitchen but can share a bathroom. JADUs are less expensive ($80,000-$150,000) and faster to permit than full ADUs.
Yes, but only on the value of the new construction — not your entire property. A $300,000 ADU would add roughly $3,000-$3,600/year in property taxes. Your existing home's assessed value remains unchanged under Prop 13.
More Services in Los Gatos
Explore our other design-build services available in Los Gatos.
Ready to Start Your Los Gatos ADU & Home Additions?
Book a free in-home consultation. We'll discuss your vision, walk through your space, and provide a detailed fixed-price estimate — no pressure, no obligation.